Portable fan



FIG. 1 is a front, top, right perspective view of a portable fan,showing the claimed design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is an exploded view thereof;

FIG. 9 is a front, top, right perspective view thereof in a state ofuse;

FIG. 10 is a rear, top, left perspective view thereof in the state ofuse;

FIG. 11 is another front, top, right perspective view thereof in a stateof use; and,

FIG. 12 is another rear, top, left perspective view thereof in the stateof use.

CLAIM The ornamental design for a portable fan, as shown and described.